原文传递
Behavior and Design of Cold-Formed Steel Bolted Connections Subjected to Combined Actions
| 题名： | Behavior and Design of Cold-Formed Steel Bolted Connections Subjected to Combined Actions |
| 正文语种： | eng |
| 作者： | Mojtabaei, Seyed Mohammad;Becque, Jurgen;Hajirasouliha, Iman |
| 作者单位： | Univ Sheffield Dept Civil & Struct Engn Sheffield S1 3JD S Yorkshire England;Univ Cambridge Dept Engn Cambridge CB2 1PZ England;Univ Sheffield Dept Civil & Struct Engn Sheffield S1 3JD S Yorkshire England |
| 关键词： | Cold-formed steel (CFS);Bolted connection;Finite-element (FE) modeling;Bolt group length;Reliability;Interaction equations |
| 摘要： | Cold-formed steel (CFS) moment connections are often formed by bolting the webs of the connecting elements to a stiffened gusset plate, and local buckling of the web adjacent to the connection typically governs their capacity. This paper aims to study this failure mode in case the connection is subject to combined axial compression, shear, and bending moment. In a first step, the case of pure compressive loading was investigated. Validated geometric and material non-linear analysis with imperfections (GMNIA) finite-lement (FE) models were used to investigate the effects of different design variables, including the cross-sectional geometry and thickness, the bolt group configuration, and the bolt group length. The results were then used to develop design equations for the compressive capacity of CFS bolted connections. In a next step, the FE models were used to assess the capacity of CFS bolted connections subject to combined bending and shear, and combined axial compression, bending, and shear. Suitable interaction equations were proposed and reliability analyses were performed within the framework of both the Eurocode and the American Iron and Steel Institute (AISI) standards. It was concluded that a linear equation accurately captures the interaction between bending moment and axial force, while the effects of a shear force smaller than half of the shear capacity on the bending moment capacity can be neglected. (C) 2021 American Society of Civil Engineers. |
| 出版年： | 2021 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 147 |
| 期： | 4 |
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